Adjustable height for people of various heights-Tool-free adjustment for simple operation-180° quick rebound spring for continuous use-Thick and fillable base with suction cups for stability-Add water or sand to the base for enhanced steadiness-Suitable for the tile, carpet, cement floor or wooden floor-A pair of soft and comfortable gloves included for hand protection-Freely adjustable gloves for different requirements-Premium speed ball and soft anti-collision foam for safe use-Heavy-duty meta